Basal metabolism of weight-stable chronically undernourished men and women: lack of metabolic adaptation and ethnic differences
| Autor: | Kuriyan R, Anna Ferro-Luzzi, Kurpad Av, C Petracchi |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Male Gerontology Hydrostatic weighing Urban Population Metabolic adaptation Ethnic group India Nutritional Status Medicine (miscellaneous) Physiology Body Mass Index Humans Medicine Socioeconomic status Tropical Climate Nutrition and Dietetics business.industry medicine.disease Adaptation Physiological Nutrition Disorders Malnutrition Social Class Chronic Disease Basal metabolic rate Lean body mass Female Basal Metabolism business Body mass index |
| Zdroj: | The American Journal of Clinical Nutrition. 66:1086-1093 |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/66.5.1086 |
| Popis: | The purpose of this study was to investigate whether weight-stable chronically energy-deficient subjects exhibit evidence of metabolic adaptation and to establish whether international predictive equations overestimate the basal metabolic rate (BMR) of tropical populations. BMR, body weight, height, and fat-free mass (FFM) by underwater weighing were measured in healthy, physically active urban dwellers of low socioeconomic status (178 men and women aged 22-38 y) in Bangalore, Southern India. Subjects were selected on the basis of body mass index (BMI; in kg/m2) and classified in three groups: severely undernourished (BMI17.0; n = 30 men, n = 25 women), marginally undernourished (BMI = 17.0-18.5; n = 31 men, n = 30 women), and well nourished (BMI18.5; n = 27 men, n = 35 women). The BMR of the well-nourished group, expressed in absolute terms (6.20 and 5.18 MJ/d for men and women, respectively), was significantly higher (P0.000) than that of the severely undernourished group (5.72 and 4.64 MJ/d for men and women, respectively). Normalizing BMR for either body weight or FFM by analysis of covariance abolished all differences. The mean BMR of the low-BMI study group was substantially higher (11-14%) than reported previously for undernourished Indian adults. The BMR of both men and women, regardless of their nutritional status, was accurately estimated by age- and sex-specific FAO/WHO/UNU equations. These findings suggest the absence of an enhanced metabolic response in weight-stable chronically undernourished adults. This is in contrast with earlier reports, and supports more recent views. The study also provides evidence of the absence of ethnic-specific energy turnover in Indians. |
| Databáze: | OpenAIRE |
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